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Guide specifications Packaged Hermetic Centrifugal Liquid Chiller Size Range: 19XR — 200 to 1500 Tons (703 to 5275 kW) Nominal 19XRV — 200 to 800 Tons (703 to 2813 kW) Nominal Carrier Model Number: 19XR,XRV Part 1 — General 1.01 SYSTEM DESCRIPTION A. Microprocessor-controlled liquid chiller shall use a single stage, semi-hermetic centrifugal compressor using refrigerant HFC-134a. B. If a manufacturer proposes a liquid chiller using HCFC-123 refrigerant, then the manufacturer shall include in the chiller price: 1. A vapor activated alarm system shall be capable of responding to HCFC-123 levels of 10 ppm Allowable Exposure Limit (AEL). 2. External refrigerant storage tank and pumpout unit. 3. Zero emission purge unit capable of operating even when the chiller is not operating. 4. Back-up relief valve to rupture disk. 5. Chiller pressurizing system to prevent leakage of noncondensables into chiller during shut- down periods. 6. Plant room ventilation. 1.02 QUALITY ASSURANCE A. Chiller performance shall be rated in accordance with ARI Standard 550/590-2003. B. Equipment and installation shall be in compliance with ANSI/ASHRAE 15 (latest edition). C. Cooler and condenser refrigerant side shall include ASME “U” stamp and nameplate certifying compli- ance with ASME Section VIII, Division 1 code for unfired pressure vessels. D. Chiller shall be designed and constructed to meet UL and UL of Canada requirements and have labels appropriately affixed. E. Centrifugal compressor impellers shall be dynami- cally balanced and over-speed tested by the manu- facturer at a minimum of 120% design operating speed. Each compressor assembly shall undergo a mechanical run-in test to verify vibration levels, oil pressures, and temperatures are within acceptable limits. Each compressor assembly shall be proof tested at a minimum 204 psig (1406 kPa) and leak tested at 185 psig (1276 kPa) with a tracer gas mixture. F. Entire chiller assembly shall be proof tested at 204 psig (1406 kPa) and leak tested at 185 psig (1276 kPa) with a tracer gas mixture on the refriger- ant side. The water side of each heat exchanger G. H. 1.03 A. B. C. D. E. 1.04 shall be hydrostatically tested at 1.3 times rated working pressure. Prior to shipment, the chiller automated controls test shall be executed to check for proper wiring and ensure correct controls operation. On chillers with unit-mounted compressor motor starter or VFD (variable frequency drive), the chiller and starter/VFD shall be factory wired and tested together to verify proper operation prior to shipment. DELIVERY, STORAGE AND HANDLING Unit shall be stored and handled in accordance with manufacturer's instructions. Unit shall be shipped with all refrigerant piping and control wiring factory installed. Unit shall be shipped charged with oil and full charge of refrigerant HFC-134a or a nitrogen hold- ing charge as specified on the equipment schedule. Unit shall be shipped with firmly attached labels that indicate name of manufacturer, chiller model num- ber, chiller serial number, and refrigerant used. If the chiller is to be exported, the unit shall be suffi- ciently protected from the factory against sea water corrosion to be suitable for shipment in a standard open top, ocean shipping container (19XR, 19XRV heat exchanger frames 1 through 6 only). WARRANTY Warranty shall include parts and labor for one year after start-up or 18 months from shipment, which- ever occurs first. A refrigerant warranty shall be pro- vided for a period of five years. Part 2 — Products 2.01 A. B. EQUIPMENT General: Factory assembled, single piece, liquid chiller shall consist of compressor, motor, starter or variable fre- quency drive, lubrication system, cooler, condenser, initial oil and refrigerant operating charges, micro- processor control system, and documentation required prior to start-up. An optional compressor motor starter or VFD can be mounted on the chiller, wired, and tested by the chiller manufacturer. Compressor: 1. One centrifugal compressor of the high perfor- mance, single-stage type. 2. Compressor, motor, and transmission shall be hermetically sealed into a common assembly and arranged for easy field servicing. 3. Internal compressor parts must be accessible for servicing without removing the compressor base from the chiller. Connections to the com- pressor casing shall use O-rings instead of gas- kets to reduce the occurrence of refrigerant leakage. Connections to the compressor shall be flanged or bolted for easy disassembly. 33PDF Image | Carrier Product Data 19XR,XRV High-Efficiency Hermetic Centrifugal Liquid Chiller 50/60 Hz HFC-134a 19XR — 200 to 1500 Nominal Tons (703 to 5275 kW) 19XRV — 200 to 800 Nominal Tons (703 to 2813 kW)
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Carrier Product Data 19XR,XRV High-Efficiency Hermetic Centrifugal Liquid Chiller 50/60 Hz HFC-134a 19XR — 200 to 1500 Nominal Tons (703 to 5275 kW) 19XRV — 200 to 800 Nominal Tons (703 to 2813 kW)Original File Name Searched:
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